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package com.oracle.truffle.js.nodes.intl;

import java.util.MissingResourceException;

import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.api.profiles.BranchProfile;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.builtins.intl.JSRelativeTimeFormat;
import com.oracle.truffle.js.runtime.util.IntlUtil;

public abstract class InitializeRelativeTimeFormatNode extends JavaScriptBaseNode {

    private final JSContext context;

    @Child JSToCanonicalizedLocaleListNode toCanonicalizedLocaleListNode;
    @Child CreateOptionsObjectNode createOptionsNode;

    @Child GetStringOptionNode getLocaleMatcherOption;
    @Child GetStringOptionNode getNumberingSystemOption;

    @Child GetStringOptionNode getStyleOption;
    @Child GetStringOptionNode getNumericOption;
    private final BranchProfile errorBranch = BranchProfile.create();

    protected InitializeRelativeTimeFormatNode(JSContext context) {
        this.context = context;
        this.toCanonicalizedLocaleListNode = JSToCanonicalizedLocaleListNode.create(context);
        this.createOptionsNode = CreateOptionsObjectNodeGen.create(context);
        this.getStyleOption = GetStringOptionNode.create(context, IntlUtil.STYLE, new String[]{IntlUtil.LONG, IntlUtil.SHORT, IntlUtil.NARROW}, IntlUtil.LONG);
        this.getNumericOption = GetStringOptionNode.create(context, "numeric", new String[]{IntlUtil.ALWAYS, IntlUtil.AUTO}, IntlUtil.ALWAYS);
        this.getLocaleMatcherOption = GetStringOptionNode.create(context, IntlUtil.LOCALE_MATCHER,
                        new String[]{IntlUtil.LOOKUP, IntlUtil.BEST_FIT}, IntlUtil.BEST_FIT);
        this.getNumberingSystemOption = GetStringOptionNode.create(context, IntlUtil.NUMBERING_SYSTEM, null, null);
    }

    public abstract DynamicObject executeInit(DynamicObject collator, Object locales, Object options);

    public static InitializeRelativeTimeFormatNode createInitalizeRelativeTimeFormatNode(JSContext context) {
        return InitializeRelativeTimeFormatNodeGen.create(context);
    }

    @Specialization
    public DynamicObject initializeRelativeTimeFormat(DynamicObject relativeTimeFormatObj, Object localesArg, Object optionsArg) {
        try {

            JSRelativeTimeFormat.InternalState state = JSRelativeTimeFormat.getInternalState(relativeTimeFormatObj);

            String[] locales = toCanonicalizedLocaleListNode.executeLanguageTags(localesArg);
            DynamicObject options = createOptionsNode.execute(optionsArg);

            getLocaleMatcherOption.executeValue(options);
            String numberingSystem = getNumberingSystemOption.executeValue(options);
            if (numberingSystem != null) {
                IntlUtil.validateUnicodeLocaleIdentifierType(numberingSystem, errorBranch);
                numberingSystem = IntlUtil.normalizeUnicodeLocaleIdentifierType(numberingSystem);
            }

            String style = getStyleOption.executeValue(options);
            String numeric = getNumericOption.executeValue(options);

            state.setStyle(style);
            state.setNumeric(numeric);

            state.resolveLocaleAndNumberingSystem(context, locales, numberingSystem);
            state.initializeRelativeTimeFormatter();
        } catch (MissingResourceException e) {
            errorBranch.enter();
            throw Errors.createICU4JDataError(e);
        }

        return relativeTimeFormatObj;
    }
}